COAL MINE FATALITY- On September 16, 1999 a continuous mining machine operator was fatally injured and a mining machine helper was seriously injured in a roof fall accident. The Roof fall occurred in an intersection adjacent to where second mining or pillar mining was taking place. The pillar mining created excessive widths in the intersection where the operator and helper were working. Additional roof support had not been installed in this area to help reduce the bearing pressures created by the excessive widths.